You are setting up a StorageGRID environment that must maintain data for regulatory compliance.

For regulatory retention in StorageGRID, the required mechanisms are S3 Object Lock and a compliant default ILM rule. StorageGRID implements write-once-read-many protection through S3 Object Lock. NetApp states that the global S3 Object Lock setting must be enabled before tenants can create buckets with S3 Object Lock enabled. Once enabled globally, the setting cannot be disabled.

There is also a mandatory ILM dependency. NetApp explicitly requires the default rule in every active ILM policy to be compliant before global S3 Object Lock can be enabled. A compliant default rule must maintain at least two replicated copies or one erasure-coded copy on Storage Nodes, must begin protection at day 0 using Ingest time, cannot place the protected copies in a Cloud Storage Pool, and must include a placement extending forever.

Option A is incorrect because SnapLock is an ONTAP WORM technology and is not the StorageGRID compliance mechanism. Option B is also incorrect: StorageGRID regulatory retention does not require an administrator-configured “Compliance Clock.” Object retention is enforced through S3 Object Lock retain-until dates, retention modes, legal holds, and compliant ILM placement.

Reference topics: S3 Object Lock → Regulatory Compliance → Compliant ILM Rules → Default ILM Rule → Retention and Legal Hold